re: [LI] yamaha op3 sound card [easy]

["Suresh Ramasubramanian" <Suresh@xxxxxxxxxxx>]

For all folks - here's the definitive info - see 
http://www.local.net/~jgo

> i am seeing a lot of confing in win$ for
> YAMAHA OPL3-Sax sound system

see below

The following document is provided AS-IS without any warranty of 
any kind. Permission is granted to distribute this document in any 
form as long as this notice remains intact. Permission is also 
granted, and encouraged, to make derivative works from this 
document as long as this notice remains intact. 12/29/1998 Aaron 
Kuhn (akuhn@xxxxxxx)  

Linux, Windows 95, and your Yamaha OPL3-SA2 based card  

You may have seen my previous posting here about my Yamaha-
OPL3SA2 soundcard. Well, after having to reconfigure my system 
again, I realize what I wrote was total incoherent babble. I've also 
figured out a thing or two since then. So I now present a more 
structured guide to how I got my soundcard working.  

The important things bout my system you need to know: Tekram 
P5T30-B4 motherboard with Award 4.51G BIOS Yamaha-OPL3SA2 
based soundcard (only mention of a company I can begin to locate 
is "Juster Multimedia" on the box) Red Hat Linux 5.1 with 2.0.36 
kernel Windows 95 OSR2  

If your system configurations anything like mine, hopefully this will 
help. My problem with my soundcard was that it'd work in Windows 
95, but not in Linux.  

The first thing you should know about these soundcards in Linux is 
they're not going to work as Soundblaster/Soundblaster Pro clones. 
The cards use the OPL3-SA2 chip which is basically a smorgasbord 
of audio technology slapped onto one chip. Not a smart way to 
make a card, but it's cheap. 

To sucessfully get it working in Linux, the card will have to be setup 
as a Windows/Microsoft Sound System Device <- (shudder).  
Anyhow, here's the basic steps to making this happen  

In my BIOS under the PNP device configuration, I have set:  

PnP OS Installed: No 
Resources controlled by: Manual  

I'm using the Linux 2.0.36 kernel with the OSSFree 3.8s9 drivers.  

The most important settings on my soundcard are: 220 
(SoundBlaster Pro function of the chip, doesn't do a damn thing in 
Linux) 530 (Windows Sound System - ding ding! This is what we 
want) 388 (MPU-401 also wanted) Primary DMA 0 Secondary DMA 1  

Now, this is all pretty standard and things, so you ask, why don't I 
just compile my kernel with that? Well, the problem is the card's on 
IRQ 5. The OSSFree drivers only support IRQ's 7, 9, 10, 11. 
Solution to this problem? Windows 95. While I'm sure you can use 
isapnp to do the same thing I'm about to descibre below, I had to 
use Windows.  

In the device manager setup for your card, you should make sure 
the Automatic Configuraiton box is UNCHECKED! Windows just 
LOVES to hijack settings, so we're not going to let it. After 
unchecking this box, you should be able to simply double click the 
Interrupt setting and change it. You may have to change your card 
to "Basic Configuration 002" which is what I had to. It didn't seem to 
want to let me change anything if I had 000 or 001.  

Ok, now that we're all set there, exit out of tbe device manager. 
'Would you like to reboot?" Yep, you want to.  

Pay careful attention to the PnP device listing your BIOS spits out, 
the IRQ and DMA settings on this list should match what you used in 
Windows.  

If all is good, edit your /etc/isapnp.conf. (Oh yeah, I did mention 
you need isapnptools?) Uncomment the correct settings for the first 
device function on the card and uncommrnet (ACT Y). The rest of 
the device functions below the audio handle the onboard IDE on my 
card, and a bunch of other stuff that was thrown on the card which I 
don't use so I really don't care what they are.  

In your kernel config selection (I use menuconfig, so adapt as 
neccessary my instructions) you want to goto the sound submenu. 
The following are checked for me:  

[*] Sound Card support [*] Generic OPL2/OPL3 FM Synthesizer 
support [*] MPU-401 support [*] Microsoft Sound System support 
[*] FM Synthesizer (YM3812/OPL-3) support  

Below those, you should see the places to enter the values in for the 
various settings. Plug in your MS/WSS interrupt (530 for me) and 
the IRQ (for me, 9) Your MPU-401 should be set to whatever is 
applicable for the card (330 here) and the IRQ will be the same as 
the MS/WSS selection. Use OSSFree3.9 in kernel  

>From here you should compile the kernel, install it, and reboot. If 
your lucky, you'll have sound. If not, keep trying ... or spend $20 
for OSS, it will save you a lot of hassle.  

end



Suresh Ramasubramanian
106D, Aditya Enclave, Ameerpet, Hyderabad 500038, India.
Phone: +(91-40)3736553/3745398 | eFax: +(1-603)590-5437
Suresh@xxxxxxxxxxx | Suresh@xxxxxxxx
http://www.kcircle.com | http://www.angen.net/~pegasus/
    If you can't describe what you are doing as 
    a process, you don't know what you're doing.
          -- William Edwards Deming

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